SMART GRID [SELF-HEALING, RESILIENCE]

                              SMART GRID                           

What is Smart Grid

Smart Grid is simply a communications system overlay on the existing electrical grid to make the electrical grid more controllable and much more efficient in the delivery of energy. The communications systems will be connected to strategically placed sensors throughout all four segments of the electrical grid: Generation, Transmission, Distribution, and Consumers.

A smart grid is a modernized electrical grid that uses analog or digital information and communications technology to gather and act on information - such as information about the behaviors of suppliers and consumers - in an automated fashion to improve the efficiency, reliability, economics, and sustainability of the production and distribution of electricity. Electronic power conditioning and control of the production and distribution of electricity are important aspects of the smart grid.

 Self-Healing

 Self-heal ability is the property that enables a system to perceive that it is not operating correctly and, without human intervention, make the necessary adjustments to restore itself to normality.

 Dependable Systems: Systems that are globally trustworthy with respect to their ability to always deliver their service. Fault-tolerant systems: Systems in which faults may occur but do not affect the performance of the system.

1 A self-healing grid is expected to respond to threats, material failures, and other destabilizing influences by preventing or containing the spread of disturbances. This requires the following capabilities:

2 Timely recognition of impending problems

3 Redeployment of resources to minimize adverse impacts

4 A fast and coordinated response to evolving disturbances

5 Minimization of loss of service under any circumstances

6 Minimization of time to reconfigure and restore service

 Resilience

1. The capability of a strained body to recover its size and shape after deformation caused especially by compressive stress

2. An ability to recover from or adjust easily to misfortune or change

3. Resilience is the property of a material to absorb energy when it is deformed elastically and then, upon unloading to have this energy recovered. In other words, it is the maximum energy per volume that can be elastically stored. It is represented by the area under the curve in the elastic region in the Stress‐Strain diagram.